Comparison between Principal Component Analysis (PCA), Analytic Hierarchy Process (AHP) and Weighted Summation as Alternative Assessment Techniques

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  • 環境アセスメントの代替案検討手法（主成分分析と階層分析法・加重総和法）の比較
  • カンキョウ アセスメント ノ ダイタイアン ケントウ シュホウ(シュセイブン ブンセキ ト カイソウ ブンセキホウ ・ カジュウ ソウワホウ)ノ ヒカク

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Abstract

It was a task to verify the effectiveness of Principal Component Analysis (PCA) as an alternative assessment technique. This paper compared the assessment results of Analytic Hierarchy Process (AHP), Weighted Summation and PCA for five case studies. It was suggested that assessment results by three techniques were coincided with suitable setup of alternatives, criteria and scoring as well as PCA was effective in terms of clarity of reasons for selecting the most suitable option, low arbitrariness, verification of analysis results and easiness of a technique compared to other two techniques. Finally the paper indicated the expectation of making better decisions through stakeholder involvement using PCA, which could define sharply merits and demerits of alternatives.

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